SOLUTION: In a small rectangular wallet photo, the widith is 7 cm less than the length. If the border (perimeter) of the photo is 34cm, find the length and width

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Question 53533This question is from textbook Introductory Algebra
: In a small rectangular wallet photo, the widith is 7 cm less than the length. If the border (perimeter) of the photo is 34cm, find the length and widthThis question is from textbook Introductory Algebra

Answer by tutorcecilia(2144) About Me  (Show Source):
You can put this solution on YOUR website!
Perimeter = length + width [Use the formula for perimeter]
Perimeter =34
width = length-7
P=length + width
34=x+(x-7) [Plug-in the values into the formula for perimeter]
34=2x-7 [Simplify]
34+7=2x-7+7 [Solve for x]
41=2x
41/2=2x/2
41/2=x
.
Check by plugging 41/2=x back into the original formula